1 /* $NetBSD: cmu.c,v 1.14 2012/10/27 17:17:55 chs Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 SASAKI Takesi 5 * Copyright (c) 1999, 2000, 2002 PocketBSD Project. All rights reserved. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the PocketBSD project 19 * and its contributors. 20 * 4. Neither the name of the project nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: cmu.c,v 1.14 2012/10/27 17:17:55 chs Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 45 #include <mips/cpuregs.h> 46 47 #include <machine/bus.h> 48 #include <machine/debug.h> 49 50 #include "opt_vr41xx.h" 51 #include <hpcmips/vr/vr.h> 52 #include <hpcmips/vr/vrcpudef.h> 53 #include <hpcmips/vr/vripif.h> 54 #include <hpcmips/vr/vripreg.h> 55 56 #include <hpcmips/vr/cmureg.h> 57 58 #include <machine/config_hook.h> 59 60 struct vrcmu_softc { 61 bus_space_tag_t sc_iot; 62 bus_space_handle_t sc_ioh; 63 config_hook_tag sc_hardpower; 64 int sc_save; 65 struct vrcmu_chipset_tag sc_chipset; 66 }; 67 68 int vrcmu_match(device_t, cfdata_t, void *); 69 void vrcmu_attach(device_t, device_t, void *); 70 int vrcmu_supply(vrcmu_chipset_tag_t, u_int16_t, int); 71 int vrcmu_hardpower(void *, int, long, void *); 72 73 CFATTACH_DECL_NEW(vrcmu, sizeof(struct vrcmu_softc), 74 vrcmu_match, vrcmu_attach, NULL, NULL); 75 76 int 77 vrcmu_match(device_t parent, cfdata_t cf, void *aux) 78 { 79 80 return (2); /* 1st attach group of vrip */ 81 } 82 83 void 84 vrcmu_attach(device_t parent, device_t self, void *aux) 85 { 86 struct vrip_attach_args *va = aux; 87 struct vrcmu_softc *sc = device_private(self); 88 89 sc->sc_iot = va->va_iot; 90 sc->sc_chipset.cc_sc = sc; 91 sc->sc_chipset.cc_clock = vrcmu_supply; 92 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 93 0 /* no flags */, &sc->sc_ioh)) { 94 printf(": can't map i/o space\n"); 95 return; 96 } 97 printf ("\n"); 98 99 vrip_register_cmu(va->va_vc, &sc->sc_chipset); 100 sc->sc_hardpower = config_hook(CONFIG_HOOK_PMEVENT, 101 CONFIG_HOOK_PMEVENT_HARDPOWER, 102 CONFIG_HOOK_SHARE, 103 vrcmu_hardpower, sc); 104 } 105 106 int 107 vrcmu_supply(vrcmu_chipset_tag_t cc, u_int16_t mask, int onoff) 108 { 109 struct vrcmu_softc *sc = cc->cc_sc; 110 u_int16_t reg; 111 112 reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0); 113 #ifdef VRCMU_VERBOSE 114 printf("cmu register(enter):"); 115 dbg_bit_print(reg); 116 #endif 117 if (onoff) 118 reg |= mask; 119 else 120 reg &= ~mask; 121 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg); 122 #ifdef VRCMU_VERBOSE 123 printf("cmu register(exit) :"); 124 dbg_bit_print(reg); 125 #endif 126 return (0); 127 } 128 129 int 130 vrcmu_hardpower(void *ctx, int type, long id, void *msg) 131 { 132 struct vrcmu_softc *sc = ctx; 133 int why = (int)msg; 134 135 switch (why) { 136 case PWR_STANDBY: 137 case PWR_SUSPEND: 138 sc->sc_save = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0); 139 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 0); 140 break; 141 case PWR_RESUME: 142 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, sc->sc_save); 143 break; 144 } 145 return (0); 146 } 147